@charset "UTF-8";

:root {
  /* Colors */
  --color-primary: #001755;
  --color-accent: #FF9615;
  --color-bg-light: #E2E2E2;
  --color-text-light: #F2F2F2;
  --color-text-dark: var(--color-primary);

  /* Fonts */
  --font-sans: "Montserrat", sans-serif;
  --font-serif: "Zen Old Mincho", serif;

  /* Body */
  --font-size-body: 16px;
  --line-height-body: 1.8;

  /* Layout */
  --container-padding: 115px;
  --edge-padding: 70px;
  --hero-copy-offset: 50px;
  --header-top: 46px;
  
  /* Hero Aircraft */

  --hero-aircraft-min-right: -900px;
  --hero-aircraft-base-right: -600px;
  --hero-aircraft-max-right: -280px;
  --hero-aircraft-reference: 1500px;
  --hero-aircraft-follow: .6;
  
  --keyword-scale: .8;
}


/* =========================
   RESET
========================= */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-serif);
  font-size: var(--font-size-body);
  line-height: var(--line-height-body);
  color: var(--color-text-dark);
  background: var(--color-bg-light);
}

img {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}


/* =========================
   COMMON
========================= */

.container {
  width: 100%;
  padding-inline: var(--container-padding);
  margin-inline: auto;
}

.section-accent {
    width: 310px;
    height: 6px;

    background: var(--color-accent);

    margin-bottom: 20px;
}


/* =========================
   HEADER
========================= */

.site-header {
  position: absolute;
  top: 0;
  left: 0;

  width: 100%;
  z-index: 20;

  padding-top:var(--header-top);
}

.site-header .container {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
}

.site-logo {
  width: 110px;
}

.contact-link {
  display: flex;
  align-items: center;
  justify-content: center;

  height: 30px;
  padding-inline: 20px;

  border: 2px solid rgba(242,242,242,.6);
  border-radius: 1em;

  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 400;
  letter-spacing: .08em;

  margin-right:calc(
    var(--edge-padding) - var(--container-padding)
  );

  color: var(--color-text-light);

  transition:
    background-color .35s,
    border-color .35s;
}
  
.contact-link:hover {
    background: rgba(255,255,255,.08);
    border-color: var(--color-text-light);
}

/* =========================
   HERO
========================= */

.hero {
  position:relative;
  height:80vh;
  min-height:720px;
  overflow:hidden;

  background: var(--color-primary);
  color: var(--color-text-light);
}


/* helicopter line drawing */

.hero-aircraft {
  position: absolute;

  top: 50%;
  width: max(90vw, 1400px);

  right: clamp(

      var(--hero-aircraft-min-right),

      calc(
          var(--hero-aircraft-base-right)
          +
          (
              100vw - var(--hero-aircraft-reference)
          )
          *
          var(--hero-aircraft-follow)
      ),

      var(--hero-aircraft-max-right)
  );
  transform:
        translateY(-48%)
        rotate(0deg);

  pointer-events: none;

  z-index: 1;
}

.hero-aircraft img {
  width: 100%;
  height: auto;

  opacity: 0.65;
}


/* hero contents */

.hero .container {
  position: relative;

  height: 100%;

  z-index: 5;
}

.hero-copy {
  position: absolute;
  left: calc(
    var(--container-padding) + var(--hero-copy-offset)
  );
  top: 49%;
  transform: translateY(-50%);
  z-index: 2;
}


/* orange box */

.hero-accent {
  position: absolute;
  left: var(--container-padding);
  top: 55%;

  width: 310px;
  height: 305px;

  transform: translateY(-50%);
  background: var(--color-accent);
  z-index: 1;
}
.hero-line {
    width:min(40vw,720px);
    height: 1px;

    margin: 26px 0 5px;

    background: var(--color-text-light);
  transform-origin:left center;
}

/* title */

.hero-title {
  margin: 0;

  font-family: var(--font-sans);
  font-size: clamp(44px, 5vw, 100px);
  font-weight: 500;
  font-style: italic;

  line-height: 0.95;
  letter-spacing: -.03em;

  white-space: nowrap;

  color: var(--color-text-light);
}


/* japanese subtitle */

.hero-title-jp {

  margin: 0;

  padding-left: 8px;

  font-family: var(--font-serif);
  font-size: 17px;
  line-height: 1.6;

  color: #242696;
}


/* =========================
   INTRO
========================= */

.intro {
  position:relative;

  background: var(--color-bg-light);

  padding-top: 45px;
  padding-bottom: 90px;
}

.hero-scroll-line {
  position: absolute;

  right: var(--edge-padding);
  top:0;

  width: 1px;
  height: 80px;

  background:rgba(255,150,21,.25);

  transform:translateY(-25%);

  overflow:hidden;
  pointer-events: none;
}

.hero-scroll-dot {
  position: absolute;

  left:0;
  top:0;

  width:100%;
  height:100%;

  background: var(--color-accent);

  transform:translateY(-100%);

  animation:scrollLine 1.8s cubic-bezier(.76,0,.24,1) infinite;
}

@keyframes scrollLine{
  0%{
    transform:translateY(-100%);
  }

  100%{
    transform:translateY(100%);
  }
}

.intro-inner {

    width:100%;

    opacity:1;

    transform:translateY(0);

}

.intro-title {
    margin:0 0 6px;

    font-family: var(--font-sans);
    font-size:22px;
    font-weight: 400;
    line-height:1.3;

    color:var(--color-primary);
}

.intro-lead {
  margin: 0;

  font-size: 16px;
  line-height: 1.8;

  color: var(--color-primary);
}

/* =========================
   SERVICE
========================= */

.service {
  position: relative;

  min-height: 760px;

  overflow: hidden;

  background: var(--color-bg-light);
  color: var(--color-primary);

  padding-top: 90px;
  padding-bottom: 165px;
  z-index: 1;
}

.service-inner {
  position: relative;
  z-index: 2;
}

.service-heading {
  max-width: 680px;
}

.service-title {
  margin: 0 0 8px;

  font-family: var(--font-sans);
  font-size: clamp(34px, 3.4vw, 64px);
  font-weight: 400;
  line-height: 1.05;
}

.service-title-jp {
  margin: 0;

  font-size: 16px;
  line-height: 1.8;
}

.service-copy {

    display: flex;
    flex-direction:column;

    max-width: 500px;

    gap: 56px;

    margin-top: 60px;
}
  
.service-copy p {
  margin: 0 0 24px;
}

.service-copy-en {
  font-family: var(--font-serif);
}

.service-bg {
  position: absolute;

  
  left: 55%;
  top: 70px;
  height: 720px;

  opacity: .85;

  pointer-events: none;
  z-index: 1;
}

.service-bg img {
  display: block;

  height: 100%;
  width: auto;

  max-width: none;
}


/* =========================
   ABOUT
========================= */

.about {
  position: relative;

  overflow: visible;

  padding-top: 210px;
  padding-bottom: 80px;

  background: var(--color-primary);
  color: var(--color-text-light);
  z-index: 2;
}
.mro-wrap {
  position: absolute;

  left: calc(var(--container-padding) - 1.1em);
  top: 0;

  transform: translateY(-40%);

  z-index: 5;
  pointer-events: none;
}
.mro-text {
  font-family: var(--font-sans);
  font-size:clamp(110px,14vw,260px);
  font-weight: 400;
  line-height:.8;
  letter-spacing:-.04em;
  color: var(--color-text-light);
}
  
.about-heading {
  margin-bottom: 55px;
}

.about-title {
  margin: 0;

  font-family: var(--font-sans);
  font-size: clamp(36px, 4vw, 68px);
  font-weight: 400;
  line-height: 1.05;
}

.about-title-jp {
  margin: 8px 0 0;

  font-size: 16px;
  line-height: 1.8;
}

.about-copy {
  display:grid;
  grid-template-columns:360px 380px;
  gap:72px;

  max-width:940px;
}
.about-copy-jp,
.about-copy-en {
  min-width:0;
}

.about-copy p{
  margin:0 0 28px;
}


.about-copy-en {
  font-family: var(--font-serif);
}
/* =========================
   ABOUT SLIDER
========================= */

.about-slider {
  position: relative;

  margin-top: 30px;

  margin-right: calc(var(--container-padding) * -1);

  overflow: hidden;
}

.about-slider-track {
  display: flex;
  align-items: flex-start;
  gap: 24px;

  transition: transform .7s cubic-bezier(.22, .61, .36, 1);
}

.about-slide {
  flex: 0 0 auto;

  height: 420px;
  margin: 0;

  overflow: hidden;
}

.about-slide img {
  display: block;

  height: 100%;
  width: auto;

  max-width: none;

}
.about-slider-nav {
  position: relative;
  display: flex;
  gap: 24px;

  margin-top: 5px;
  margin-left: 5px;

  z-index: 5;
}

.about-slider-button {
  position: relative;
  width: 84px;
  height: 28px;
  padding: 0;
  border: 0;
  background: none;
  cursor: pointer;

  transition: transform .4s cubic-bezier(.22,.61,.36,1);
}



/* LINE */

.about-slider-button::before {
  content: "";

  position: absolute;
  top: 50%;

  width: 80px;
  height: 1px;

  background: var(--color-accent);

  transition: width .4s cubic-bezier(.22,.61,.36,1);
}


/* ARROW HEAD */

.about-slider-button::after {
  content: "";

  position: absolute;
  top: 50%;

  width: 6px;
  height: 6px;

  border-top: 1px solid var(--color-accent);
  border-right: 1px solid var(--color-accent);
}


/* PREV */

.about-slider-prev::before {
  left: 2px;
}

.about-slider-prev::after {
  left: 2px;

  transform:
    translateY(-50%)
    rotate(-135deg);
}


/* NEXT */

.about-slider-next::before {
  right: 2px;
}

.about-slider-next::after {
  right: 2px;

  transform:
    translateY(-50%)
    rotate(45deg);
}


/* ========================
   HOVER
======================== */

.about-slider-prev:hover {
  transform: translateX(-5px);
}

.about-slider-next:hover {
  transform: translateX(5px);
}

.about-slider-button:hover::before {
  width: 88px;
}
.about-keyword {
    margin-top:90px;

    font-family: var(--font-sans);
    font-weight: 400;
    line-height:1.2;
    letter-spacing:-.03em;

    color:rgba(242,242,242,.95);
}
.keyword-top {
    display:block;
    font-size: calc(clamp(90px, 11vw, 200px) * var(--keyword-scale));
}

.keyword-bottom {
    display:block;
    font-size: calc(clamp(82px, 10vw, 180px) * var(--keyword-scale));
}
.about-keyword span {
    display:block;
}
/* =========================
   PHILOSOPHY
========================= */

.philosophy {
  position: relative;
  overflow: hidden;

  padding-top: 105px;

  background: var(--color-primary);
  color: var(--color-text-light);
}

.philosophy .container {
  position: relative;
  z-index: 2;
}

.philosophy-heading {
  width: 500px;
  margin-bottom: 55px;
}
.philosophy-title {
  margin: 0;

  font-family: var(--font-sans);
  font-size: clamp(36px, 4vw, 68px);
  font-weight: 400;
  line-height: 1.05;
}
.philosophy-title-jp {
  margin: 8px 0 0;

  font-family: var(--font-serif);
  font-size: 16px;
  line-height: 1.8;
}
.philosophy-copy {
  display: flex;
  flex-direction: column;

  width: 500px;
  gap: 56px;
}

.philosophy-copy p {
  margin: 0;
}

.philosophy-copy-en {
  font-family: var(--font-serif);
}
.philosophy-side-image {
  position: absolute;

  top: 65px;
  left: 63%;
  height: 600px;

  z-index: 1;
  pointer-events: none;
}

.philosophy-side-image img {
  display: block;

  height: 100%;
  width: auto;

  max-width: none;
}
.philosophy-image {
  margin-top: 300px;
  width: 100%;
  height: 650px;
  overflow: hidden;
}

.philosophy-image img {
  width: 100%;
  height: 115%;
  object-fit: cover;
  display: block;
}
/* =========================
   CONTACT
========================= */

.contact {
  padding-top:80px;
  padding-bottom:36px;

  background:var(--color-primary);
  color: var(--color-text-light);
}


/* ---------- Layout ---------- */

.contact-grid {
  display:grid;

  grid-template-columns:repeat(3,max-content);

  column-gap:80px;

  align-items:start;
}


/* ---------- Company ---------- */

.contact-company-name {
  margin:0;

  font-family: var(--font-sans);
  font-size:20px;
  font-weight: 400;
  line-height:1.2;

  letter-spacing:.02em;
}
.contact-company-president{
  margin: 8px 0 0;

  font-family: var(--font-serif);
  font-size: 14px;
  line-height: 1.8;

  color: var(--color-text-light);
}

/* ---------- Text ---------- */

.contact-address p,
.contact-info p {
  margin:0 0 12px;

  font-family:var(--font-serif);
  font-size:14px;
  line-height:1.8;

  color: var(--color-text-light);
}

.contact-address p:last-child,
.contact-info p:last-child{
  margin-bottom:0;
}


/* ---------- Footer ---------- */

.contact-footer {
  margin-top:40px;
  padding-top:20px;

  transform:translateX(
    calc(var(--container-padding) - var(--edge-padding))
  );
}

.contact-footer p {
  margin:0;

  font-family: var(--font-sans);
  font-size:12px;
  font-weight: 400;
  text-align: right;

  color:rgba(242,242,242,.6);
}
.dark-sections {
  background: #001755;
}

.about,
.philosophy,
.contact {
  background: transparent;
}

/* ========================================
   Tablet / Narrow PC
   768px - 1099px
======================================== */

@media (min-width: 768px) and (max-width: 1099px) {

  :root {
    --container-padding: 60px;
    --edge-padding: 40px;
    --hero-copy-offset: 20px;
  }


  /* ========================
     Hero
  ======================== */

  .hero-title {
    font-size: clamp(44px, 6vw, 64px);
  }


  /* ========================
     Section Title
  ======================== */

  .service-title,
  .about-title,
  .philosophy-title {
    font-size: clamp(36px, 5vw, 52px);
  }


  /* ========================
     Service
  ======================== */

  .service-copy {
    gap: 40px;
  }


  /* ========================
     About
  ======================== */

  .about-copy {
    width: 100%;
    max-width: none;
    gap: 0;
  }

  .about-copy-jp {
    width: 300px;
    flex-shrink: 0;
  }

  .about-copy-en {
    width: 330px;
    flex-shrink: 0;
  }


  /* ========================
     Philosophy
  ======================== */

  .philosophy-heading {
    width: clamp(260px, 28vw, 320px);
    flex-shrink: 0;
  }

  .philosophy-copy {
    width: clamp(340px, 38vw, 420px);
    flex-shrink: 0;
    gap: 40px;
  }


  /* ========================
     Contact
  ======================== */

  .contact-grid {
    gap: 50px;
  }
}
/* =========================
   MOBILE
========================= */

@media (max-width: 767px) {

  :root {
    --font-size-body: 14px;
    --container-padding: 24px;
  --edge-padding: 24px;
  }

  /* Header */
  .site-header {
    padding-top: 24px;
  }

  .site-logo {
    width: 90px;
  }

  .contact-link {
    height: 28px;
    padding-inline: 16px;
    font-size: 12px;
  }


  /* Hero */
  .hero{
    height:82.5svh;
    min-height:600px;
  }

  .hero-copy{
    left: 24px;
    top: 47%;
    transform: translateY(-50%);
  }

  .hero-title{
    font-size: clamp(24px, 7.2vw, 34px);
    line-height: .95;
    white-space: nowrap;
  }

  .hero-line {
    width: 55vw;
    margin: 7px 0 3px;
  }

  .hero-title-jp{
    margin: 5px 0 0 0;
    padding-left: 0;
    font-size: 12px;
    line-height: 1.5;
  }

  .hero-accent {
    left: 0;
    top: 47%;

    width: 74vw;
    height: 18svh;

    transform: translateY(-50%);
  }

.hero-aircraft {
  width: clamp(
    900px,
    calc(900px + (100vw - 377px) * .5),
    1100px
  );

  right: clamp(
    -540px,
    calc(-540px + (100vw - 377px) * .35),
    -400px
  );

  top: 74%;
  transform: translateY(-50%);
}
  .hero-aircraft img{
      opacity: 0.65;
  }


  /* Intro */
  .intro {
    padding-top: 30px;
    padding-bottom: 60px;
  }

  .intro-title {
    font-size: 18px;
  }

  .intro-lead {
    font-size: 14px;
  line-height: 1.5;
  }


  /* Service */
  .service {
    min-height: auto;
    padding-top: 72px;
    padding-bottom: 120px;
  }

  .service-heading,
  .service-copy {
    max-width: none;
    width: 100%;
  }

  .service-title {
    font-size: 34px;
  }

  .service-title-jp {
    font-size: 14px;
  }

  .service-copy {
    gap: 36px;
    margin-top: 40px;
  }

  .service-bg {
    left: auto;
    right: -65vw;
    top: 160px;

    height: 520px;

    opacity: .25;
  }


  /* MRO */
  .mro-wrap {
    top: 10px;
    transform: translateY(-30%);
  }

  .mro-text {
    font-size: clamp(90px,28vw,150px);
    transform: none;
  }


  /* About */
  .about {
    padding-top: 130px;
    padding-bottom: 30px;
  }

  .about-title {
    font-size: 38px;
  }

  .about-copy {
    display: flex;
    flex-direction: column;

    width: 100%;
    max-width: none;

    gap: 36px;
  }

  .about-slider {
    margin-top: 30px;
    margin-right: calc(var(--container-padding) * -1);
  }

  .about-slide {
    height: 260px;
  }

  .about-keyword {
    margin-top: 60px;
  }

  .keyword-top,
  .keyword-bottom {
    font-size: 10vw;
    white-space: nowrap;
  }

  .keyword-bottom {
    margin-top: 24px;
  }

  /* Philosophy */
  .philosophy {
    padding-top: 72px;
  }

  .philosophy-heading,
  .philosophy-copy {
    width: 100%;
  }

  .philosophy-title {
    font-size: 38px;
  }

  .philosophy-copy {
    gap: 36px;
  }

  .philosophy-side-image {
    position: relative;

    top: auto;
    left: auto;

    width: calc(100% + var(--container-padding));
    height: auto;

    margin-top: 25px;
  margin-bottom: 72px;
    margin-left: var(--container-padding);

    overflow: hidden;
  }

  .philosophy-side-image img {
    width: 100%;
    height: auto;
  }

  .philosophy-image {
    margin-top: 100px;
    height: 320px;
  }


  /* Contact */
  .contact {
    padding-top: 72px;
    padding-bottom: 28px;
  }

  .contact-grid {
    display: flex;
    flex-direction: column;

    gap: 28px;
  }

  .contact-company-name {
    font-size: 18px;
  }
  .contact-company-president {
    margin-top: 4px;
  }
  .contact-address p,
  .contact-info p {
    font-size: 14px;
   line-height: 1.6;
  }

  .contact-footer {
    margin-top: 40px;
  }
}
@media (min-width: 1800px) {
  .service-heading {
    max-width: 900px;
  }
   .hero-aircraft {
    right: -30vw;
  }
}